Vulnerability and Decision-Making in Multispecies Fisheries: A Risk Assessment of Bacalao (Mycteroperca olfax) and Related Species in the Galapagos’ Handline Fishery
| Autor: | Stijn Bruneel, Jose R. Marin Jarrin, Peter Goethals, José Pontón-Cevallos, Jorge R. Bermúdez-Monsalve, Jorge Ramírez-González |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
multispecies fisheries vulnerability lcsh:TJ807-830 Geography Planning and Development INTRINSIC VULNERABILITY Mycteroperca olfax Vulnerability 01 natural sciences groupers SPATIAL MANAGEMENT lcsh:Environmental sciences lcsh:GE1-350 Geography Policy and Law biology lcsh:Environmental effects of industries and plants Marine reserve EXTINCTION RISK Management Habitat Monitoring REEF FISHES CONSERVATION Fishing lcsh:Renewable energy sources BIOLOGY Management Monitoring Policy and Law 010603 evolutionary biology Vulnerability assessment EL-NINO productivity susceptibility analysis Renewable Energy Planning and Development MARINE PROTECTED AREAS Sustainability and the Environment Overfishing Renewable Energy Sustainability and the Environment 010604 marine biology & hydrobiology decision-making biology.organism_classification MODEL Fishery lcsh:TD194-195 Earth and Environmental Sciences Threatened species COMMUNITIES |
| Zdroj: | Sustainability, Vol 12, Iss 6931, p 6931 (2020) SUSTAINABILITY |
| ISSN: | 2071-1050 |
| Popis: | Marine fish populations can be vulnerable to overfishing, as a response of their life history, ecology, and socio-economic aspects. Vulnerability assessments, in this regard, can be used to support fisheries decision-making by aiding species prioritization. Assessments like Productivity–Susceptibility Analyses are well suited for multispecies fisheries, with low gear selectivity and insufficient fishery-independent and dependent data. Using this method, we assessed local vulnerability of the Galapagos grouper (‘bacalao’; Mycteroperca olfax) and compared it with other phylogenetically-related species caught in the Galapagos’ handline-fishery. Bacalao is an overfished regionally endemic fish species, characterized by low resilience, high market and cultural value and high spatial overlap with the fishery. Our results suggested that bacalao is a species of high management priority, requiring urgent measures to prevent fisheries’ collapse. In addition, if current fishing pressure persists, other related species may become threatened in the near future. We also evaluated different management scenarios using this approach. Results suggested that the inclusion of additional no-take zones in the marine reserve, comprising key nursery habitats (such as mangroves) and spawning aggregation sites, would be necessary to reduce species vulnerability and to benefit other related species. Improving enforcement and fishers’ compliance are essential to guarantee the effectiveness of these measures. |
| Databáze: | OpenAIRE |
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